DXGKDDI_ENUMVIDPNCOFUNCMODALITY callback function (d3dkmddi.h)
The DxgkDdiEnumVidPnCofuncModality function makes the source and target modes sets of a VidPN cofunctional with the VidPN's topology and the modes that have already been pinned.
Syntax
DXGKDDI_ENUMVIDPNCOFUNCMODALITY DxgkddiEnumvidpncofuncmodality;
NTSTATUS DxgkddiEnumvidpncofuncmodality(
IN_CONST_HANDLE hAdapter,
IN_CONST_PDXGKARG_ENUMVIDPNCOFUNCMODALITY_CONST pEnumCofuncModality
)
{...}
Parameters
hAdapter
A handle to a context block associated with a display adapter. The display miniport driver previously provided this handle to the DirectX graphics kernel subsystem in the MiniportDeviceContext output parameter of the DxgkDdiAddDevice function.
pEnumCofuncModality
A pointer to a DXGKARG_ENUMVIDPNCOFUNCMODALITY structure that contains function arguments.
Return value
DxgkDdiEnumVidPnCofuncModality returns STATUS_SUCCESS if it succeeds; otherwise, it returns one of the error codes defined in Ntstatus.h.
Remarks
The hConstrainingVidPn member of pEnumCofuncModalityArg is a handle to a VidPN object called the constraining VidPN. Other members of pEnumCofuncModalityArg identify one video present source or target as the pivot of the enumeration (or specify that there is no pivot).
DxgkDdiEnumVidPnCofuncModality must perform the following tasks:
- Examine the topology and mode sets of the constraining VidPN.
- Update each mode set that is not the pivot and does not already have a pinned mode. The updated mode sets must be cofunctional with the VidPN's topology and with any modes that have already been pinned.
The DxgkDdiEnumVidPnCofuncModality function should be made pageable.
Requirements
Requirement | Value |
---|---|
Minimum supported client | Windows Vista |
Target Platform | Desktop |
Header | d3dkmddi.h |
IRQL | PASSIVE_LEVEL |